Interesting note on the primer thing. I don't have a way to test it - I just have to believe what people tell me.
My understanding is that 215 Match is the same as 215, just with the best guys on the line making them. However, the tests I've seen say that results in a little more priming compound on average and just looking at them that seems to be true.
Of course the possibility that things change is omnipresent...
